读入文件-缺少输入 [英] Reading in file - input missing

问题描述

我正在尝试帮助

I was trying to help this user with an answer, but reading in the file isn't working as I expected.

如果我创建的文件只包含OP的前两行:

If I create a file with just the OPs first two lines:

学习Java-William Lane -12.00-Wiley-0811234561

Learning Java - William Lane -12.00 - Wiley - 0811234561

-威廉·斯托林(William Stalling)-25.00-普伦蒂斯·霍尔(Prentice Hall)-1304086641

- William Stalling - 25.00 - Prentice Hall - 1304086641

输出符合预期:

Learning Java - William Lane -12.00 - Wiley - 0811234561
- William Stalling - 25.00 - Prentice Hall - 1304086641

但是当我添加第三行时:

But when I add the third line:

学习Java-William Lane -12.00-Wiley-0811234561

Learning Java - William Lane -12.00 - Wiley - 0811234561

-威廉·斯托林-25.00-普伦蒂斯·霍尔-1304086641

- William Stalling - 25.00 - Prentice Hall - 1304086641

OOP编程-格雷厄姆·温特-32.50 –奥赖利-0471974555

OOP programming - Graham Winter - 32.50 – O'Reilly - 0471974555

输出为空白.

我的代码很简单，只是为了测试它.我直接从上面的链接问题复制并粘贴了文件内容.该行上是否有特殊字符，如果是，如何找到它?为什么不打印其他行?

My code is straight forward, just to test it. I copied and pasted the file contents directly from the linked question above. Is there a special character on that line, and if so, how to find it? And why would it not print the other lines?

Scanner sc = new Scanner(new File("myfile"));
        while (sc.hasNextLine()) {
            String nameLine = sc.nextLine();
            System.out.println(nameLine);
        }

我通过调试器运行它，sc.hasNextLine返回false，程序结束.

I ran it through a debugger and sc.hasNextLine returns false and the program ends.

我基本上是使用Notepad进行测试的，并且(在浏览器上)注意到32.50和O'Reilly之间的破折号略有拉长.因此，我删除了该破折号并保存，该程序按预期工作.当我把它放回去并保存并重新运行该程序时，它什么也不显示.我每次都能生产.

I'm using Notepad basically to test this, and noticed (on the browser) that the dash between 32.50 and O'Reilly is slightly elongated. So I removed this dash and saved and the program works as expected. When I put it back in and save and re-run the program, it doesn't display anything. I can produce this every time.

然后我在Notepad++中进行了测试，所有工作均顺利进行.快乐的日子.

I then tested in Notepad++ and all worked smoothly. Happy days.

所以我用WinMerge在两个文件之间进行了比较；它基本上说唯一的区别是破折号，在Notepad++上是â€，在Notepad上是–.

So I did a comparison between the two files with WinMerge; it basically says the only difference is that dash, and on Notepad++, it's â€" but on Notepad, it's –.

有任何想法吗?

推荐答案

可能是因为文件编码/字符集不同.尝试以UTF-8模式读取文件并进行检查.

THis might probably because of difference in file encoding/character set. Try reading the file as UTF-8 mode and check.

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